Features of the surface of the Earth such as mountains, hills, dunes, oceans, and rivers are called

• delta
• erosion
• landforms

The movement of weathered material on the Earth's surface by wind, water, and ice is

• erosion
• deposition
• landslides

A sudden release of energy under the Earth's surface that makes the ground shake or crack is

• weathering
• earthquake
• landform

The breakdown of rock into smaller particles from the effects of wind, water and ice is

• deposition
• delta
• weathering

The buildup of land by depositing sediment and soil in a new location is

• earthquake
• weather
• deposition

A triangle-shaped (deposit) landform at the mouth of a river as it empties into a body of water is

• weather
• delta
• landform

When a river flows over the Earth and carves out a hole in the surface it makes a 

• hill
• mountain
• canyon

A delta forms when the river meets the ocean because 

• the river is colder than the ocean
• the river slows down and drops sediments
• the earth builds up pressure in the river

What natural force formed the Grand Canyon millions of years ago?

• a landslide
• an earthquake
• a river

What is necessary for sand dunes to form?

• loose sand and strong wind
• pressure in the earth
• ice glaciers